I don't know if this has been posted somewhere already, but I was wondering if there was some some type of algae eater fish or something that eats primarily algae I could put in my 20g long to help control the algae population. It has a Betta, 3 Jumbo Tetras and 3 Corys. I was hoping for something that might also get along with ADF's (I have them in a separate 10g tank-just thinking for future reference).

Careful, both otos and plecos can get too big for a 20 gallon tank. Go out and buy some Algae killer chemicals instead, most are totally healthy for fish and plants. If you really wasnt something natural to do it then buy a snail

Maybe I will get a snail if the algae eater fishes don't work for my tank. my corys love skimming/licking every surface of my tank and decorations, but they don't see that they are just not algae fish even if they do try to help. LOL.

Careful, both otos and plecos can get too big for a 20 gallon tank. Go out and buy some Algae killer chemicals instead, most are totally healthy for fish and plants. If you really wasnt something natural to do it then buy a snail

I've never seen an otto get larger than 3cm, and bristle nose pleco's get 5-6 inches, both are perfectly suitable for a 20 long, it would be pushing stocking limits though, but if you stay in top of water changes should be fine.

Also, sorry for double post, be very careful with snails you might start with one but end up with hundreds, most can breed asexually. There is one kind that breeds in brakish water only, but can live in fresh water but I can't remember which one.

I heard mystery snails are not asexual, but I know some of them can get big, like the apple snail (like golf ball sized), which they can get confused with. I dunno whether I'd want a bigger snail, but I think a lot of people would find it neat when they look in a tank and see a big snail. A bristlenose would be a different interesting fish too, although I admit to me their face is one that isn't the most attractive, lol.